The hot/pressing comb is a metal comb that is heated on either a range top or burner to a temperature between 300 and 500 degrees Fahrenheit. By pulling the heated comb through the hair, the pressure applied during the combing process breaks down the hair fiber's biochemical bonds. As the temperature diminishes, the bonds reconnect and keep the hair straight. Typically, the hair remains straight from one to two weeks or until it comes into contact with moisture or humidity.
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